CN109853772B - Self-resetting mild steel damper - Google Patents
Self-resetting mild steel damper Download PDFInfo
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- CN109853772B CN109853772B CN201910280674.4A CN201910280674A CN109853772B CN 109853772 B CN109853772 B CN 109853772B CN 201910280674 A CN201910280674 A CN 201910280674A CN 109853772 B CN109853772 B CN 109853772B
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- sliding guide
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Abstract
The invention discloses a self-resetting mild steel damper, wherein a sleeve is added in the damper to prevent a sliding guide rod from longitudinally displacing; the reset springs are arranged between the inner sides of the two ends of the sleeve and the common steel plates, so that the self-reset and the increase of the structural rigidity are realized when the sleeve is deformed, the output of the damper is supplemented, and the reset springs can serve as limiting devices in the sleeve; four round holes are formed in the round soft steel sheet to weaken the soft steel sheet, damage caused by overlarge stress is avoided, and the output force of the damper can be adjusted; four common steel plates are added into the damper to reduce the slenderness ratio of the sliding guide rod, prevent the guide rod from buckling, unstably and damaging and prevent stress concentration at the variable cross section of the sliding guide rod; the main body of the self-resetting soft steel damper consists of an open-pore round soft steel sheet, a reset spring, a common steel plate, a sliding guide rod and a sleeve; and limit displacement protection plates are arranged at the two ends of the sliding guide rod to prevent sudden damage of the damper caused by excessive deformation. The damper has a strong self-resetting function, can meet the requirement of quick recovery function after energy consumption, and greatly reduces the probability of repairing the damper after earthquake.
Description
Technical Field
The invention belongs to the field of earthquake resistance of building engineering structures, and relates to a self-resetting mild steel damper, in particular to a mild steel damper capable of realizing self-resetting through a spring.
Background
With the development of the design theory of earthquake resistance and wind resistance of civil engineering structures, the ideas of energy dissipation and vibration reduction are applied to the earthquake resistance of various building engineering, and the design and use of energy dissipation components and energy dissipation dampers are becoming more and more common. Modern energy dissipation and vibration reduction technologies mainly add energy dissipation devices to the structure to dissipate energy so as to reduce deformation of the structure, but larger residual deformation still exists after an earthquake. The large-scale restoration or the toppling reconstruction after the earthquake inevitably brings huge economic loss and causes unnecessary waste. Therefore, the self-resetting mild steel damper has good energy consumption capability and self-resetting function, and can be well applied to earthquake-resistant design of building structure engineering.
In the prior art, as disclosed in the patent with publication number CN201710489962.1, a self-resetting amplifying displacement type shape memory alloy damper is disclosed, but the shape memory alloy is used as an intelligent material, has high price and small output, and limits the wide application in the field.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a self-resetting mild steel damper. The reset springs are arranged between the inner sides of the two ends of the sleeve and the common steel plates and used for self-resetting and increasing structural rigidity when deformation occurs, supplementing the output of the damper and serving as a limiting device inside the sleeve. The damper has a strong self-resetting function, can meet the requirement of quick recovery function after energy consumption, and greatly reduces the probability of post-earthquake repair.
The technical scheme adopted by the invention is as follows:
the self-resetting soft steel damper comprises three perforated circular soft steel sheets, wherein the perforated circular soft steel sheets are fixed between a sliding guide rod and a sleeve by adopting a welding method; a reset spring is arranged on a guide rod between the inner sides of the two ends of the sleeve and the common steel plate; four common steel plates and perforated circular mild steel sheets are arranged in the sleeve at intervals, and are fixed on the sliding guide rod by adopting a welding method, and a sliding steel ball bearing is arranged between the sleeve and the sliding guide rod; the non-longitudinal displacement of the sliding guide rod is restrained by the sleeve, and the two ends of the sliding guide rod are provided with limit displacement protection plates.
Preferably, the damper is a self-resetting mild steel metal damper.
Preferably, the damper core is three perforated circular soft steel sheets, and is fixed on the sliding guide rod and the sleeve by adopting a welding method.
Preferably, the damper is provided with a return spring on a guide rod between the inner sides of the two ends of the sleeve and the common steel plate, and the purpose of the damper is to self-return when deformation occurs, increase the rigidity of the damper, supplement the output of the damper and serve as a limiting device in the sleeve.
Preferably, four round holes are formed in the core round soft steel sheet of the damper to weaken the soft steel sheet and adjust the output of the damper.
Preferably, the damper is provided with four common steel plates, the four common steel plates and the perforated circular soft steel sheets are alternately arranged in the sleeve, the damper is fixed on the sliding guide rod by adopting a welding method, and a sliding steel ball bearing is arranged between the damper and the sleeve, so that the slenderness ratio of the sliding guide rod is reduced to prevent buckling instability damage and stress concentration at the variable cross section of the sliding guide rod.
Preferably, the damper is a sleeve that constrains the sliding guide from non-longitudinal displacement.
Preferably, the damper is provided with limit displacement protection plates, which are arranged at two ends of the sliding guide rod.
The design working principle of the invention is as follows:
the main body of the self-resetting soft steel damper consists of a sliding guide rod, a reset spring, a sleeve, a common steel plate and a perforated circular soft steel sheet. In the working state of the damper, the sliding guide rod is pulled to drive the perforated circular soft steel plate to deform, and meanwhile, the reset spring is compressed, so that the additional damping of the structure is increased, and the aim of damping the structural efficiency is fulfilled. After the deformation is finished, the self-resetting function of the damper can be realized through the restoring force of the reset spring.
The invention has the beneficial effects that:
the invention provides a self-resetting mild steel damper, wherein a reset spring is added in the damper for self resetting, so that the structural rigidity is increased, the output of the damper is supplemented, and the damper can serve as a limiting device in a sleeve; a common steel plate is added to avoid buckling instability of the guide rod due to overlarge slenderness ratio; a round hole is arranged on the soft steel sheet and is used for weakening the steel sheet and adjusting the output of the damper; the limit displacement protection plate is arranged on the sliding guide rod, so that sudden damage of the damper caused by excessive deformation is prevented; the method is suitable for energy dissipation support, energy dissipation nodes and energy dissipation connection of building structures, and has a wide application range.
Drawings
The technical scheme of the invention is further specifically described below with reference to the accompanying drawings and the detailed description.
FIG. 1 is a schematic view of the basic structure of a self-resetting mild steel damper according to the invention.
FIG. 2 is a cross-sectional view A-A of the present invention.
FIG. 3 is a B-B cross-sectional view of the present invention.
FIG. 4 is a C-C cross-sectional view of the present invention.
FIG. 5 is a schematic view of an open-celled circular mild steel sheet of the invention.
Fig. 6 is a schematic three-dimensional structure of the present invention.
In the figure, a 1-sliding guide rod, a 2-reset spring, a 3-sleeve, a 4-common steel plate, a 5-perforated round soft steel sheet, a 6-sliding steel ball bearing, a 7-limit displacement protection plate and an 8-round hole.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the attached drawings: the present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are provided, but the protection scope of the present invention is not limited to the following embodiments.
Examples:
referring to fig. 1, the invention is a self-resetting soft steel damper, the main body of which consists of a sliding guide rod 1, a return spring 2, a sleeve 3, a common steel plate 4 and a perforated circular soft steel sheet 5. The common steel plates 4 and the perforated circular soft steel plates 5 are alternately arranged in the sleeve 3; the reset springs 2 are arranged on guide rods between the inner sides of the two ends of the sleeve 3 and the common steel plate 4, and the reset springs 2 are free and work independently; the limit displacement protection plate 7 is used for ensuring that the damper can still normally operate without losing the shock-resistant control protection effect on the structure due to sudden damage when the structure is greatly deformed beyond the normal operation travel range of the damper.
Referring to fig. 2, the sleeve 3 serves to constrain non-longitudinal displacement of the sliding guide bar 1.
Referring to fig. 3, the common steel plate 4 is welded on the sliding guide rod 1 and a sliding steel ball bearing 6 is arranged between the common steel plate and the sleeve 3, so as to reduce the slenderness ratio of the sliding guide rod 1 to prevent buckling instability damage and stress concentration at the variable cross section of the sliding guide rod 1.
Referring to fig. 4, the perforated circular soft steel sheet 5 is welded on the sliding guide rod 1 and the sleeve 3; the damper output can be adjusted by changing the number and thickness of the perforated circular soft steel sheet 5.
Referring to fig. 5, four round holes 8 are formed in the perforated circular soft steel sheet 5 to weaken the soft steel sheet and adjust the output of the damper.
Finally, it should be noted that the above-mentioned embodiments are merely illustrative of the technical solutions of the present invention, rather than limiting, and that modifications and equivalents may be made thereto without departing from the principles of the technical solutions of the present invention, which are intended to be covered by the scope of the claims of the present invention.
Claims (8)
1. The self-resetting soft steel damper is characterized by comprising three perforated circular soft steel sheets (5), wherein the perforated circular soft steel sheets (5) are fixed between a sliding guide rod (1) and a sleeve (3) by adopting a welding method; a reset spring (2) is arranged on a guide rod between the inner sides of the two ends of the sleeve (3) and the common steel plate (4); four common steel plates (4) are arranged in the sleeve (3) alternately with the perforated circular soft steel plates (5), and are fixed on the sliding guide rod (1) by adopting a welding method, and a sliding steel ball bearing (6) is arranged between the sliding guide rod and the sleeve (3); the non-longitudinal displacement of the sliding guide rod is restrained by the sleeve (3), and the two ends of the sliding guide rod are provided with limit displacement protection plates (7).
2. A self-resetting mild steel damper as defined in claim 1, wherein said damper is a self-resetting mild steel metal damper.
3. The self-resetting soft steel damper according to claim 1, wherein the damper core is three perforated circular soft steel sheets (5) and is fixed on the sliding guide rod (1) and the sleeve (3) by adopting a welding method.
4. The self-resetting mild steel damper according to claim 1, wherein the damper is provided with a return spring (2) on a guide rod between the inner sides of both ends of the sleeve (3) and the common steel plate (4), and is aimed at self-resetting when deformation occurs, increasing the rigidity of the damper, supplementing the output of the damper, and being capable of acting as a limiting device inside the sleeve (3).
5. A self-resetting soft steel damper as claimed in claim 1, wherein four round holes (8) are provided in the round soft steel sheet of the core opening of the damper to weaken the soft steel sheet and adjust the output of the damper.
6. The self-resetting soft steel damper according to claim 1, wherein the damper is provided with four common steel plates (4), is arranged in the sleeve (3) alternately with the perforated circular soft steel plates (5), is fixed on the sliding guide rod (1) by adopting a welding method, and is provided with a sliding steel ball bearing (6) between the sleeve (3), and the purpose is to reduce the slenderness ratio of the sliding guide rod (1) to prevent buckling instability damage and stress concentration at the variable cross section of the sliding guide rod (1).
7. A self-resetting mild steel damper as claimed in claim 1, characterised in that said damper is restrained against non-longitudinal displacement of the sliding guide (1) by a sleeve (3).
8. A self-resetting mild steel damper as claimed in claim 1, characterized in that said damper is provided with limit displacement protection plates (7) provided at both ends of the sliding guide bar (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910280674.4A CN109853772B (en) | 2019-04-09 | 2019-04-09 | Self-resetting mild steel damper |
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| CN201910280674.4A CN109853772B (en) | 2019-04-09 | 2019-04-09 | Self-resetting mild steel damper |
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| CN109853772A CN109853772A (en) | 2019-06-07 |
| CN109853772B true CN109853772B (en) | 2023-09-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113216695B (en) * | 2021-05-12 | 2022-02-18 | 吉林大学 | Template support vibration attenuation rod piece and anti-collapse control method |
| CN113585847A (en) * | 2021-07-23 | 2021-11-02 | 北京工业大学 | Assembled self-reset combined disc spring X-shaped mild steel energy consumption device |
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| 分阶段耗能软钢阻尼器的实现方法及数值模拟;薛松涛;李林;谢丽宇;;结构工程师(04);全文 * |
| 超高层建筑基于性能的组合消能减震结构设计及其应用;吴宏磊;丁洁民;刘博;;建筑结构学报(03);全文 * |
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| CN109853772A (en) | 2019-06-07 |
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